Being both employed (W-2) and self-employed (1099/contractor) means you must report all income on your tax return, using Schedule C for business earnings and paying self-employment tax on that portion. While you receive a W-2 for one job, you must manage taxes and expenses for the other, potentially adjusting withholding or making estimated payments to avoid underpayment penalties.
You can be employed and self-employed at the same time. This would usually be the case if you were doing two jobs. For example, if you work for yourself as a hairdresser during the day but in the evenings you work as a receptionist in a hotel, you will be both self-employed and employed.
Report both W-2 and 1099 income on Form 1040, the standard individual tax return. Use Schedule C to report business income and expenses, and Schedule SE to calculate self-employment taxes.
If you're self-employed – either on a full-time basis or just as a side gig – you'll likely have to pay federal self-employment taxes. However, the self-employment taxes you pay won't offset the federal income tax you otherwise owe. That's because the two taxes are different.
Working for yourself and being an employee at the same time is possible. Whether you work for yourself full-time or have a side-gig on top of being employed at another job, you'll need to file a self-employed schedule with your tax return.
In general, employers can request that you disclose if you have another job. They may do this to ensure there's no conflict of interest or if they are concerned about how the second job might affect your performance in your current role.
The biggest tax mistakes people make include filing late, math errors, incorrect personal info (like Social Security numbers), forgetting deductions/credits (like EITC), misreporting income, not signing forms, and making errors with bank details for direct deposit, all leading to delays, penalties, or missed savings, with using tax software or professionals helping avoid these common pitfalls.
Key takeaways. The “self-employment tax” means you'll pay up to 15.3% for Social Security and Medicare taxes, since you're considered as both employer and employee. Being self-employed allows you tax deductions for qualified business income, retirement account contributions, and business-related expenses.
To avoid double taxation, use "pass-through" business structures like LLCs or S Corporations where profits are taxed only once at the owner's individual rate, instead of C Corporations which are taxed at the corporate level and again on dividends; alternatively, C Corp owners can pay salaries, retain earnings strategically, or use income splitting, while international earners rely on foreign tax credits or treaty provisions.
Choose the Right Business Structure
Sole proprietors and single-member LLCs pay full self-employment tax on all profits. However, if your income exceeds a certain threshold, switching to an S Corporation (S-Corp) could significantly reduce your SE taxes.
As a self-employed individual, you pay both income tax and a 15.3% self-employment tax (Social Security & Medicare) on 92.35% of your net earnings (profit after business deductions), plus potential state income tax, requiring quarterly estimated tax payments to the IRS to avoid penalties, often setting aside 25-30% of income for taxes.
Here are a few mistakes small business owners should avoid:
Paying a tax professional is all well and good, but if you're self-employed and looking to save, DIYing your taxes — or using paid tax software like TaxAct® — might be your best and cheapest filing option, especially if you've got minimal expenses.
Focus on monetizing your skills, hobbies, and interests to earn extra money while working full-time. Anyone can pick up a side hustle. Some don't require upfront investments, like filling out surveys, freelancing, Print on Demand, or pet sitting.
Being self-employed means managing your taxes yourself; unlike traditional employees, you're accountable for paying income taxes, Medicare, and Social Security taxes. While traditional employers issue W-2 forms for incomes above $600, freelancers receive Form 1099-NEC from clients for projects over $600 (in 2025).
Maximum marginal rate is the highest rate of tax at any income level. This means for those with incomes between Rs 2 crore and Rs 5 crore, 39% will be the highest applicable tax rate, and for those with incomes above Rs 5 crore, it will be 42.74% — the highest tax rate since 1992.
While the U.S. can legally tax you twice on the same income, most American expats never pay taxes twice. The IRS provides powerful tools like the Foreign Earned Income Exclusion and Foreign Tax Credit that eliminate or significantly reduce double taxation for Americans living abroad.
Self-employed individuals generally must pay self-employment (SE) tax as well as income tax. SE tax is a Social Security and Medicare tax primarily for individuals who work for themselves. It is similar to the Social Security and Medicare taxes withheld from the pay of most wage earners.
To avoid double taxation, one option is to structure the business as a “flow-through” or pass-through entity. In this setup, profits bypass corporate taxation and go directly to the business owners. The owners then report and pay taxes on their share of the income at their respective tax rates.
How Does It Affect You? Double taxation happens when two countries tax the same income, like foreign wages or business profits. Canada taxes residents on all their income, wherever it's earned, while other countries tax income earned within their borders. Without relief, you pay twice, losing a lot of money.
The IRS does not check every tax return. It does not check the majority of them, but the IRS implements methods that track certain factors that would result in a further examination or audit by them.
Wages, dividends, bank interest, and other income received and that was reported on an information return should be entered carefully. This includes any information needed to calculated credits and deductions.
Al Capone. A federal grand jury indicted notorious gangster Al Capone, leader of the Chicago Outfit crime syndicate, with 22 counts of tax evasion totaling over $200,000 in 1931 (equivalent to more $3.8 million today).